Oxidative Coupling of Benzylamines to Imines by Molecular Oxygen Catalyzed by Cobalt(II) β-Tetrakis(trifluoromethyl)-meso-tetraphenylporphyrin
2014
Zhao, Shuai | Liu, Chao | Guo, Yong | Xiao, Ji-Chang | Chen, Qing-Yun
Oxidative coupling of benzylamines to imines by molecular oxygen is efficiently realized in the presence of very low catalyst loadings of Co(II) β-tetrakis(trifluoromethyl)-meso-tetraphenylporphyrin. Due to the effect of four β-CF₃ groups, the catalyst shows good selectivity and very high turnover number. The reaction is easily scaled up and may provide a convenient way to prepare many imines in large scale.
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